Antenna structure and manufacture method thereof, communication device

Abstract

An antenna structure, a manufacturing method thereof, and a communication device are disclosed. The antenna structure includes a first substrate, a second substrate, a dielectric layer, a plurality of first electrodes and a plurality of second electrodes. The dielectric layer is disposed between the first substrate and the second substrate; the plurality of first electrodes are disposed at intervals on a side of the first substrate adjacent to the dielectric layer; the plurality of second electrodes are disposed at intervals on a side of the second substrate adjacent to the dielectric layer; a side of the first substrate facing the second substrate includes a plurality of first recess portions each including a first concaved surface which is dented into the first substrate; the dielectric layer is at least partly disposed in the plurality of first recess portions.

What is claimed is: 
     
       1. An antenna structure, comprising:
 a first substrate; 
 a second substrate; 
 a dielectric layer disposed between the first substrate and the second substrate; 
 a plurality of first electrodes disposed at intervals on a side of the first substrate adjacent to the dielectric layer; and 
 a plurality of second electrodes disposed at intervals on a side of the second substrate adjacent to the dielectric layer, 
 a side of the first substrate facing the second substrate comprising a plurality of first recess portions, each of the plurality of first recess portions comprising a first concaved surface dented into the first substrate, 
 the dielectric layer being at least partly disposed in the plurality of first recess portions, 
 wherein the plurality of first electrodes are disposed in one-to-one correspondence with the plurality of first recess portions, and each of the plurality of first electrodes is disposed on the first concaved surface of a corresponding first recess portion; 
 a side of the second substrate facing the first substrate comprises a plurality of second recess portions each comprising a second concaved surface which is dented into the second substrate; 
 the dielectric layer is at least partly disposed in the plurality of second recess portions; 
 the plurality of second recess portions are disposed in one-to-one correspondence with the plurality of first recess portions; 
 the first substrate further comprises a plurality of first flat portions each connecting adjacent first recess portions, 
 the second substrate further comprises a plurality of second flat portions each connecting adjacent second recess portions, and 
 the plurality of first flat portions and the plurality of second flat portions are configured to seal the plurality of first recess portions and the plurality of second recess portions, respectively. 
 
     
     
       2. The antenna structure provided according to  claim 1 , wherein a cross section of the first recess portion comprises a semi-circular shape. 
     
     
       3. The antenna structure according to  claim 1 , further comprising a plurality of buffer blocks disposed between the first flat portions and the second flat portions. 
     
     
       4. The antenna structure according to  claim 1 , wherein the plurality of second electrodes are disposed in one-to-one correspondence with the plurality of second flat portions, and
 each of the plurality of second electrodes is disposed on a corresponding second flat portion. 
 
     
     
       5. The antenna structure according to  claim 4 , wherein an orthographic projection of the second concaved surface on the first substrate is fallen within an orthographic projection of the first concaved surface on the first substrate. 
     
     
       6. The antenna structure according to  claim 1 , wherein a cross section of the second concaved surface comprises a semi-circular shape. 
     
     
       7. The antenna structure according to  claim 1 , wherein the dielectric layer comprises liquid crystals (LCs). 
     
     
       8. The antenna structure according to  claim 1 , wherein each of the first substrate and the second substrate is a flexible substrate. 
     
     
       9. The antenna structure according to  claim 1 , further comprising:
 a first control electrode, which is disposed between the first substrate and the first electrode, and is electrically connected to the first electrode; and 
 a second control electrode, which is disposed between the second substrate and the second electrode, and is electrically connected to the second electrode. 
 
     
     
       10. A manufacturing method of an antenna structure, comprising:
 providing a first substrate and a second substrate; 
 forming a plurality of first recess portions in the first substrate; 
 forming a plurality of first electrodes at intervals on a side of the first substrate on which the plurality of first recess portions are formed; 
 forming a plurality of second electrodes at intervals on the second substrate; 
 disposing the first substrate and the second substrate to be opposite to each other, and interposing a dielectric layer between the first substrate and the second substrate in such a manner that the side of the first substrate on which the plurality of first electrodes are formed is facing the side of the second substrate on which the plurality of second electrodes are formed, and the dielectric layer being at least partly filled in the plurality of first recess portions; 
 forming a plurality of second recess portions each comprising a second concaved surface which is dented into the second substrate on a side of the second substrate facing the first substrate; 
 forming a plurality of first flat portions each connecting adjacent first recess portions on the first substrate; and 
 forming a plurality of second flat portions each connecting adjacent second recess portions on the second substrate, 
 wherein the plurality of first electrodes are disposed in one-to-one correspondence with the plurality of first recess portions, and each of the plurality of first electrodes is disposed on the first concaved surface of a corresponding first recess portion; 
 the dielectric layer is at least partly disposed in the plurality of second recess portions; 
 the plurality of second recess portions are disposed in one-to-one correspondence with the plurality of first recess portions; and 
 the plurality of first flat portions and the plurality of second flat portions are configured to seal the plurality of first recess portions and the plurality of second recess portions, respectively. 
 
     
     
       11. A communication device, comprising the antenna structure which comprises:
 a first substrate; 
 a second substrate; 
 a dielectric layer disposed between the first substrate and the second substrate; 
 a plurality of first electrodes disposed at intervals on a side of the first substrate adjacent to the dielectric layer; and 
 a plurality of second electrodes disposed at intervals on a side of the second substrate adjacent to the dielectric layer, 
 a side of the first substrate facing the second substrate comprising a plurality of first recess portions, each of the plurality of first recess portions comprising a first concaved surface dented into the first substrate, 
 the dielectric layer being at least partly disposed in the plurality of first recess portions, 
 wherein the plurality of first electrodes are disposed in one-to-one correspondence with the plurality of first recess portions, and each of the plurality of first electrodes is disposed on the first concaved surface of a corresponding first recess portion; 
 a side of the second substrate facing the first substrate comprises a plurality of second recess portions each comprising a second concaved surface which is dented into the second substrate; 
 the dielectric layer is at least partly disposed in the plurality of second recess portions; 
 the plurality of second recess portions are disposed in one-to-one correspondence with the plurality of first recess portions; 
 the first substrate further comprises a plurality of first flat portions each connecting adjacent first recess portions; 
 the second substrate further comprises a plurality of second flat portions each connecting adjacent second recess portions; and 
 the plurality of first flat portions and the plurality of second flat portions are configured to seal the plurality of first recess portions and the plurality of second recess portions, respectively.